EP0143876A1 - Dispositif pour la fabrication de pièces moulées à partir de masses de moulage - Google Patents

Dispositif pour la fabrication de pièces moulées à partir de masses de moulage Download PDF

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Publication number
EP0143876A1
EP0143876A1 EP84106775A EP84106775A EP0143876A1 EP 0143876 A1 EP0143876 A1 EP 0143876A1 EP 84106775 A EP84106775 A EP 84106775A EP 84106775 A EP84106775 A EP 84106775A EP 0143876 A1 EP0143876 A1 EP 0143876A1
Authority
EP
European Patent Office
Prior art keywords
grooves
heating
molding tool
tubular
heating elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP84106775A
Other languages
German (de)
English (en)
Inventor
Volker Dr. Härtel
Josef Rachel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Metzeler Kautschuk GmbH
Metzeler Kautschuk AG
Original Assignee
Metzeler Kautschuk GmbH
Metzeler Kautschuk AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Metzeler Kautschuk GmbH, Metzeler Kautschuk AG filed Critical Metzeler Kautschuk GmbH
Publication of EP0143876A1 publication Critical patent/EP0143876A1/fr
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H05B3/30—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material on or between metallic plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/02—Moulds or cores; Details thereof or accessories therefor with incorporated heating or cooling means

Definitions

  • the invention relates to a device for producing molded parts from molding compositions of the type specified in the preamble of claim 1.
  • the molds of such devices are, in general, indirectly heated by electric energy, steam or flüssi- g en media, for example oil.
  • holes can be provided in the base of the mold, through which water vapor or heated oil flows.
  • the disadvantage here is that these holes must be sealed exactly; in addition, only straight-line bores can be used, so that the adaptation to different heating characteristics, based on the area to be heated, is not possible. In particular, it becomes problematic to generate a very exact amount of heat per unit area.
  • heating cartridges in fitting bores, which are generally designed as blind bores.
  • heating cartridges burn relatively often, so that the replacement of defective heating cartridges is complicated.
  • only blind holes with a straight line can be used here, so that the adaptation to different heat characteristics is not possible.
  • the invention is therefore based on the object to provide a device for producing molded parts from molding compositions of the type specified, in which the above-mentioned Disadvantages do not occur.
  • Such tubular heaters have a spirally wound resistance element in the metal jacket, which in turn is surrounded by highly compressed magnesium oxide.
  • tubular heating elements can be bent in accordance with the shape of the grooves, the shape of the grooves in turn being able to be adapted to the special, desired heating characteristics.
  • the tubular heating elements are press-fitted in the grooves so that an optimal heat transfer between the tubular heating element and the heating plates is guaranteed.
  • the installed heating capacity is determined by the number and length of the tubular heating element.
  • the heating power generated per cm 2 is expediently increased in the edge zones of the heating plates by arranging a plurality of tubular heating elements in these areas. In this way, the radiation losses that occur at the edge of the heating plates can be compensated.
  • tubular heaters should also have a smaller distance from the mold in the edge areas, i. i.e., are in the contact area of the upper heating plate.
  • the radiation losses are lower in the middle of the heating plates and thus of the molding tool, so that the tubular heating elements can have a greater distance from the molding tool in this area. It is therefore advisable to arrange the tubular heating elements in the contact area of the heating plate removed from the molding tool.
  • tubular heating elements are expediently inserted as an open loop in the corresponding grooves, with each tubular heating element being assigned its own control circuit with a temperature sensor, which should be located as close as possible to the mold cavity.
  • the external tubular heating elements on the one hand and the internal tubular heating elements on the other hand are connected in parallel and connected to their own control circuit, so that it is possible to control these tubular heating elements independently of one another.
  • tubular heaters can be switched in stages depending on the temperature in order to make the heating-up time as short as possible and to keep the energy consumption as low as possible, because the full heating power can now be used when starting up and losses can be compensated by means of a low base load.
  • Another advantage is the simple and inexpensive manufacture of the heating plates, which no longer have to contain exact fitting holes; Furthermore, inexpensive standard heating elements, namely tubular elements with a metal jacket, which can be obtained without problems in various embodiments, can be used, the shape of which can be adapted to the desired temperature characteristic without problems. Maintenance of this heating device also poses no problems, since the tubular heating elements can be easily removed from the open grooves and, if necessary, replaced.
  • this heating means can be adapted to any desired order of the mold cavity and / or heating power, so that this device ulkanisationspressen both V can also be used in other devices as a form.
  • a device for producing molded parts from molding compounds indicated generally by reference numeral 10, has a press base plate 32, an extension plate 30, an insulating plate 28, two heating plates 20 and 18 and the actual molding tool 12 with the mold cavity 14 .
  • This molding tool 12 can be divided along a dividing line, not shown, so that it can be opened and the finished molding can be removed.
  • the two heating plates 18 and 20 are, for example by screws (not shown), firmly connected to the molding tool 12 and have grooves on their contact surfaces, namely the grooves 22a, 22b in the contact surface of the upper heating plate 18 facing the molding tool 12 and grooves 24a, 24b in the contact area of the lower heating plate 20.
  • the grooves 22a, 22b, 24a, 24b and accordingly also the tubular heating elements 26a, 26b, 27a, 27b the shape of approximately rectangular loops which are arranged concentrically to one another;
  • the external grooves 22a, 22b and the corresponding tubular heating elements 26a, 26b are located in the contact area of the upper heating plate 18 facing the molding tool 18, in order to compensate for the radiation losses from the external surfaces of the heating plates or the molding tool.
  • the internal grooves 24a, 24b and, accordingly, the associated tubular heating elements 27a, 27b are located in the contact area of the lower heating plate 20, since the radiation losses are lower in this area and therefore the small distance between the heat source and the molding tool 12 is not necessary.
  • the installed heating power is determined by the number and length of the tubular heating element, while a precisely defined, uniform temperature can be achieved over the entire area of the mold cavity 14 by the spatial arrangement of the grooves and the associated tubular heating element.
  • a temperature sensor 16 which is connected to a control circuit 34 for the tubular heating elements 26a, 26b, 27a, 27b, is located in the molding tool 12 at the smallest possible distance from the mold cavity 14.
  • a separate control circuit with associated temperature sensor 16 can also be provided in the mold 12 for each tubular heating element.
  • the external tubular heating elements on the one hand and the internal tubular heating elements on the other hand should be connected in parallel to a separate control circuit.
  • tubular heating elements 26a, 26b, 27a, 27b in stages depending on the temperature in order to make the heating-up time as short as possible and to optimize the energy consumption; When starting up, you can then work with full heating power, whereby the losses that occur can be compensated for by the relatively low base load.
EP84106775A 1983-07-13 1984-06-14 Dispositif pour la fabrication de pièces moulées à partir de masses de moulage Ceased EP0143876A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3325310 1983-07-13
DE3325310A DE3325310C2 (de) 1983-07-13 1983-07-13 Vorrichtung zur Herstellung von Formteilen aus Kunststoff

Publications (1)

Publication Number Publication Date
EP0143876A1 true EP0143876A1 (fr) 1985-06-12

Family

ID=6203901

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106775A Ceased EP0143876A1 (fr) 1983-07-13 1984-06-14 Dispositif pour la fabrication de pièces moulées à partir de masses de moulage

Country Status (6)

Country Link
US (1) US4586690A (fr)
EP (1) EP0143876A1 (fr)
JP (1) JPS6089311A (fr)
BR (1) BR8403497A (fr)
DE (1) DE3325310C2 (fr)
ES (1) ES280240Y (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994008770A1 (fr) * 1992-10-16 1994-04-28 Innova Zug Ag Outil ou moule a regulation thermique pour la fabrication de pieces moulees en matiere plastique et procede pour la fabrication de ces outils ou moules
DE102007030261A1 (de) 2007-06-28 2009-01-08 Busse Heizplattentechnik Gmbh Heizvorrichtung, insbesondere für einen Vakuumlaminator

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU189254B (en) * 1983-03-25 1986-06-30 Boros,Gyoergy,Hu Prefabricated plate members of tool body particularly for tools of closed hollow
JPH0524504Y2 (fr) * 1985-08-23 1993-06-22
DE3632640A1 (de) * 1986-09-25 1988-06-01 Agfa Gevaert Ag Verfahren zur herstellung eines spritzgiesswerkzeugs
FR2658753A1 (fr) * 1990-02-23 1991-08-30 Snecma Dispositif de moulage en materiau composite pour le pressage a chaud de pieces en materiau refractaire.
JP2685405B2 (ja) * 1993-02-12 1997-12-03 株式会社東芝 半導体樹脂封止装置
DE4307347C2 (de) * 1993-03-09 1996-09-26 Werner Kotzab Verfahren zum Temperieren einer Spritzgießform
GB9501108D0 (en) * 1995-01-20 1995-03-08 Evans Rowland F Mould heating method and heated mould
US5993185A (en) * 1996-03-21 1999-11-30 Farmacapsulas S.A. Deck plate assemblies for forming capsules
FR2789187B1 (fr) * 1998-11-19 2001-11-30 Cirtes Ct D Ingenierie De Rech Procede de realisation de pieces mecaniques, en particulier de prototypes, par decomposition en strates, strates elementaires obtenues selon le procede et pieces mecaniques ainsi obtenues
FR2809040B1 (fr) 2000-05-15 2002-10-18 Cirtes Ct D Ingenierie De Rech Structure d'etau pour le positionnement et le maintien de pieces en vue de leur usinage
FR2808896B1 (fr) * 2000-05-15 2003-05-09 Cirtes Ct D Ingenierie De Rech Dispositif pour la realisation de plaques destinees a un procede de prototypage rapide, procede d'usinage et d'assemblage desdites plaques et pieces prototypes ainsi obtenues
FR2845492B1 (fr) * 2002-10-07 2004-11-26 Cirtes Src Piece mecanique avec au moins un circuit de transport de fluide et son procede de conception par strates
CA2514467C (fr) * 2003-02-06 2013-11-12 Cirtes Src Procede pour l'opitimisation des joints de strates dans une modelisation ou prototypage par decomposition en strates et pieces ainsi obtenues
US7168942B1 (en) * 2003-07-31 2007-01-30 Cito Products, Inc. Method and apparatus for mold temperature control using air
US7033154B2 (en) * 2003-08-28 2006-04-25 Nordson Corporation Lamellar extrusion die apparatus and method
US7033153B2 (en) * 2003-08-28 2006-04-25 Nordson Corporation Lamellar meltblowing die apparatus and method
US20050196481A1 (en) * 2004-03-04 2005-09-08 Spradling Drew M. Tool bodies having heated tool faces
JP4585441B2 (ja) * 2005-12-13 2010-11-24 日本電熱株式会社 サーモプレート
US20070205530A1 (en) * 2006-03-02 2007-09-06 Nordson Corporation Apparatus and methods for distributing a balanced air stream to an extrusion die of a meltspinning apparatus
JP5457099B2 (ja) * 2009-08-04 2014-04-02 有限会社リナシメタリ 金型の加熱構造
WO2011096861A1 (fr) * 2010-02-04 2011-08-11 Saab Ab Outil de formage de surface lisse et procédé de fabrication associé
DE102010008698A1 (de) * 2010-02-19 2011-08-25 Vogel Moulds And Machines Ag Formenträger für eine Formschließmaschine
DE102010008699B4 (de) * 2010-02-19 2013-11-28 Vogel Moulds And Machines Ag Formschließmaschine
DE102011052365B4 (de) 2011-08-02 2017-02-09 Heraeus Sensor Technology Gmbh Mikrostrukturierter Heißprägestempel
US10766232B2 (en) 2012-10-23 2020-09-08 Saab Ab Smooth surface forming tool and manufacture thereof
EP3023399B1 (fr) 2014-11-18 2020-01-01 Total Marketing Services Composition d'additif anti-poussière pour matériau de construction
JP6856314B2 (ja) * 2015-11-25 2021-04-07 アピックヤマダ株式会社 樹脂成形金型

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2332672A1 (de) * 1973-06-25 1975-01-09 Siemens Ag Form zur herstellung von kunststoffformkoerpern und verfahren zur herstellung von kunststoff-formkoerpern unter verwendung dieser form
DE2711558A1 (de) * 1977-03-17 1978-09-21 Werner & Pfleiderer Heizplatte fuer formwerkzeuge
DE3017559A1 (de) * 1980-05-08 1981-11-12 Gottfried Joos Maschinenfabrik GmbH & Co, 7293 Pfalzgrafenweiler Beheizungs- und kuehlelement

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7314242U (de) * 1975-03-20 Goldmann S & Co Kg Beheizte Werkzeugform zur Herstellung von Kunststoffteilen
US2540242A (en) * 1947-05-26 1951-02-06 Joseph B Brennan Apparatus for casting metal strips
DE2017402A1 (en) * 1970-04-11 1971-10-28 Goetzewerke Friedrich Goetze Ag, 5673 Burscheid Heating plates for a multi-storey vulcanis-ing press
US3751014A (en) * 1970-09-21 1973-08-07 Graham Engin Corp Apparatus for extruding synthetic plastic resins at low temperatures
US3760156A (en) * 1970-10-09 1973-09-18 Bunker Ramo Detachable electrical heating griddle
GB1359539A (en) * 1971-10-18 1974-07-10 Pyrotenax Ltd Electric heating device
US3850559A (en) * 1973-04-18 1974-11-26 Unisil Molds Inc Apparatus for vulcanizing rubber molds
US4490321A (en) * 1982-12-16 1984-12-25 Klinkau & Co. Gmbh Method and apparatus for manufacturing filter plates or the like

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2332672A1 (de) * 1973-06-25 1975-01-09 Siemens Ag Form zur herstellung von kunststoffformkoerpern und verfahren zur herstellung von kunststoff-formkoerpern unter verwendung dieser form
DE2711558A1 (de) * 1977-03-17 1978-09-21 Werner & Pfleiderer Heizplatte fuer formwerkzeuge
DE3017559A1 (de) * 1980-05-08 1981-11-12 Gottfried Joos Maschinenfabrik GmbH & Co, 7293 Pfalzgrafenweiler Beheizungs- und kuehlelement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994008770A1 (fr) * 1992-10-16 1994-04-28 Innova Zug Ag Outil ou moule a regulation thermique pour la fabrication de pieces moulees en matiere plastique et procede pour la fabrication de ces outils ou moules
US5855933A (en) * 1992-10-16 1999-01-05 Innova Zug Ag Temperature-controllable tool or mold for producing plastic moldings and process for making such tools or molds
DE102007030261A1 (de) 2007-06-28 2009-01-08 Busse Heizplattentechnik Gmbh Heizvorrichtung, insbesondere für einen Vakuumlaminator
DE202007019056U1 (de) 2007-06-28 2010-05-20 Busse Heizplattentechnik Gmbh Heizvorrichtung, insbesondere für einen Vakuumlaminator

Also Published As

Publication number Publication date
ES280240Y (es) 1985-07-16
DE3325310C2 (de) 1986-01-30
DE3325310A1 (de) 1985-01-24
JPS6089311A (ja) 1985-05-20
ES280240U (es) 1985-01-16
US4586690A (en) 1986-05-06
BR8403497A (pt) 1985-06-25

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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17P Request for examination filed

Effective date: 19840614

AK Designated contracting states

Designated state(s): DE FR GB IT

17Q First examination report despatched

Effective date: 19860603

STAA Information on the status of an ep patent application or granted ep patent

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18R Application refused

Effective date: 19870803

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HAERTEL, VOLKER, DR.

Inventor name: RACHEL, JOSEF